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EP 2 864 285 A1

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(43) Date of publication: 29.04.2015 Bulletin 2015/18 (21) Application number: 13752940.0 (22) Date of filing: 21.06.2013

(51) International Patent Classification (IPC):  C07C 67/14(2006.01) C07C 69/54(2006.01) (86) International application number: PCT/IN2013/000387 (87) International publication number: WO 2013/190575 (27.12.2013 Gazette 2013/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 21.06.2012 IN DE19152012 (71) Applicant: Council of Scientific & Industrial Research New Delhi 110 001 (IN)

(72) Inventors: PONRATHNAM Surendra Pune-411008 Maharashtra (IN) GHORPADE, Ravindra, Vasant Pune-411008 Maharashtra (IN) CHAVAN, Nayaku, Nivrati Pune-411008 Maharashtra (IN) CHELANATTUKIZHAKKEMADATH, Rajan Pune-411008 Maharashtra (IN) BHOSALE, Sonali, Madhavrao Pune-411008 Maharashtra (IN) BHONGALE, Sunil, Sitaram Pune-411008 Maharashtra (IN) (74) Representative: Robertson, James Alexander  Marks & Clerk LLP 90 Long Acre London WC2E 9RA London WC2E 9RA (GB)